Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '147270c4559d7e8bd55a55ad5848faa759d96fae6190357824eda31f4f580f27' 
  AND token = 'p8mo+Yw+pKv4lg+BO4k/81OMuGF7156eB0EFnI/V6xs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00049

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}